radish-build-dir

#!/bin/bash

termprocesses()
{
for i in /proc/[0-9]*
 do readlink "${i}/root" | fgrep -q "${1}" && (\
 pid=`echo ${i} | cut -d/ -f3`
 execfile=`readlink /proc/${pid}/exe`
 echo "${execfile}" | fgrep -q "${1}" && (\
  echo "Running process: ${execfile}"
  mv "${execfile}" "${execfile}.backup"
  kill "${2}" "${pid}" || true
  sleep 2
  mv "${execfile}.backup" "${execfile}" ) || true ) || true
done
}

cleanup()
{
set +e

if [ "${mountdir}" != "" -a -d "${mountdir}" ]
then
  termprocesses "${mountdir}" -KILL
  [ -d "${mountdir}/proc" ] && umount "${mountdir}/proc" 2>/dev/null
  [ -d "${mountdir}/sys" ] && umount "${mountdir}/sys" 2>/dev/null
fi
}

if [ "`id -u`" != "0" ]
  then
    echo "This script can only run as root"
    exit 1
fi

check="true"
for ex in \
 echo pwd mktemp mount debootstrap mv cat chroot readlink \
 kill cut grep fgrep rm umount sleep rmdir
  do
    loc=`which "${ex}"`
    if [ "${loc}" = "" ]
      then
      echo "${ex} is missing"
      check="false"
    fi
  done

if [ "${check}" = "false" ]
  then
  echo "Some utilities are missing"
  exit 1
fi

suite="wheezy"
kernel_package_ubuntu_lts=""
url=""
if [ "$1" != "" ]
  then
  suite="$1"
  if [ "$2" != "" ]
    then
    kernel_package_ubuntu_lts="$2"
  fi
  if [ "$3" != "" ]
    then
    url="$3"
  fi
fi

set -e

unset LC_CTYPE LC_MESSAGES LC_ALL
export LANG=C

trap cleanup EXIT

currdir=`pwd`
mountdir=`mktemp -d --tmpdir="${currdir}" radish-mount.XXXXXXXXXX`

echo "Installing the base system..."

debootstrap "${suite}" "${mountdir}" "${url}"

if grep -Eq '^Label: *Ubuntu' "${mountdir}/var/lib/apt/lists/"*_*Release
  then
  is_debian="false"
  if [ "${kernel_package_ubuntu_lts}" = "" ]
    then
    kernel_package="linux-generic"
    else
    kernel_package="linux-generic-lts-${kernel_package_ubuntu_lts}"
  fi
  else
  is_debian="true"
  if [ `uname -m` = "x86_64" ]
    then
    kernel_package="linux-image-amd64"
    else
    kernel_package="linux-image-486"
  fi
fi

echo "Configuring package repositories..."

if [ "${is_debian}" = "true" ]
  then
  if [ "${url}" = "" ]
    then
    url="http://ftp.us.debian.org/debian"
  fi
  cat > "${mountdir}/etc/apt/sources.list" << __EOF__
deb ${url} ${suite} main contrib non-free
deb-src ${url} ${suite} main contrib non-free
deb ${url} ${suite}-updates main contrib non-free
deb-src ${url} ${suite}-updates main contrib non-free
__EOF__
  else
  if [ "${url}" = "" ]
    then
    url="http://us.archive.ubuntu.com/ubuntu/"
  fi
cat > "${mountdir}/etc/apt/sources.list" << __EOF__
deb ${url} ${suite} main restricted universe multiverse
deb-src ${url} ${suite} main restricted universe multiverse
deb ${url} ${suite}-updates main restricted universe multiverse
deb-src ${url} ${suite}-updates main restricted universe multiverse
deb ${url} ${suite}-backports main restricted universe multiverse
deb-src ${url} ${suite}-backports main restricted universe multiverse
deb ${url} ${suite}-security main restricted universe multiverse
deb-src ${url} ${suite}-security main restricted universe multiverse
__EOF__
fi

echo "Preparing system for update..."

mount --bind /proc "${mountdir}/proc"
mount --bind /sys "${mountdir}/sys"

invoke_rc_d_renamed="false"
initctl_renamed="false"

if [ -f "${mountdir}/usr/sbin/invoke-rc.d" ]
  then
  invoke_rc_d_renamed="true"
  mv "${mountdir}/usr/sbin/invoke-rc.d" \
     "${mountdir}/usr/sbin/invoke-rc.d.backup"
  cat > "${mountdir}/usr/sbin/invoke-rc.d" << __EOF__
#!/bin/sh
exit 0
__EOF__

  chmod +x "${mountdir}/usr/sbin/invoke-rc.d"
  fi

if [ -f "${mountdir}/sbin/initctl" ]
  then
  initctl_renamed="true"
  mv "${mountdir}/sbin/initctl" \
     "${mountdir}/sbin/initctl.backup"
  cat > "${mountdir}/sbin/initctl" << __EOF__
#!/bin/sh
exit 0
__EOF__

  chmod +x "${mountdir}/sbin/initctl"
  fi

echo "Updating repositories..."

chroot "${mountdir}" apt-get update

echo "Updating installed packages..."

chroot "${mountdir}" apt-get upgrade -y
chroot "${mountdir}" apt-get dist-upgrade -y

echo "Installing kernel and bootloader..."

chroot "${mountdir}" sh -c "DEBIAN_FRONTEND=noninteractive \
 apt-get install -y --no-install-recommends \
 ${kernel_package} grub-pc"

echo "Installing additional packages..."

chroot "${mountdir}" apt-get install -y --no-install-recommends \
 avahi-autoipd avahi-daemon avahi-utils dbus isc-dhcp-server \
 lighttpd openssh-client openssh-server screen tftp-hpa tftpd-hpa \
 bzip2 dialog partclone parted less psmisc initramfs-tools
chroot "${mountdir}" apt-get -f install -y

echo "Restoring filesystem into usable state..."

if [ "${invoke_rc_d_renamed}" = "true" ]
  then
  mv "${mountdir}/usr/sbin/invoke-rc.d.backup" \
     "${mountdir}/usr/sbin/invoke-rc.d"
fi

if [ "${initctl_renamed}" = "true" ]
  then
  mv "${mountdir}/sbin/initctl.backup" \
     "${mountdir}/sbin/initctl"
fi

echo "Updating initial ramdisk(s)..."

chroot "${mountdir}" update-initramfs -u -k all

echo "Terminating processes left from installation..."

termprocesses "${mountdir}" -TERM

sleep 5

termprocesses "${mountdir}" -KILL

if [ -f "${mountdir}/lib/udev/rules.d/75-persistent-net-generator.rules" ]
  then
  echo "Disabling persistent network device generator rules..."

  echo 'GOTO="persistent_net_generator_end"' > \
   "${mountdir}/lib/udev/rules.d/75-persistent-net-generator.rules.tmp"
  cat "${mountdir}/lib/udev/rules.d/75-persistent-net-generator.rules" >> \
   "${mountdir}/lib/udev/rules.d/75-persistent-net-generator.rules.tmp"
  cat "${mountdir}/lib/udev/rules.d/75-persistent-net-generator.rules.tmp" > \
   "${mountdir}/lib/udev/rules.d/75-persistent-net-generator.rules"
  rm "${mountdir}/lib/udev/rules.d/75-persistent-net-generator.rules.tmp"
fi

echo "Adding regular user..."

chroot "${mountdir}" adduser --disabled-password --gecos "User" user

echo "Un-mounting filesystem image..."

umount "${mountdir}/proc"
umount "${mountdir}/sys"

trap "" EXIT

echo "Directory ${mountdir} is ready."